Question

Suppose a bag contains 2 quarters, 1 dime, 5 nickels, and 3 pennies. If you randomly select one coin out of the bag, what is the probability that it is a nickel? P(N) = ________ If you randomly select one coin out of the bag, what is the probability it is not a quarter? P(Q) = ________ If you select two coins with replacement, what is the probability of picking a dime (D1) and then a penny (P2)? Reminder: Show setup! P(D1 and P2) = ________ If you select two coins without replacement, what is the probability that they are both nickels? Reminder: Show setup! P(N1 and N2)

Answer #1

A CONTAINER HOLDS 15 PENNIES 8 NICKELS AND 10 PENNIES. YOU WILL
RANDOMLY SELECT TWO COINS WITHOUT REPLACEMENT. Q HOW MANY WAYS CAN
YOU SELECT TWO COINS? A. 33 B. 12 C.9 D. 3 Q. WHAT IS THE
PROBABILITY YOU SELECT A PENNY ON YOUR FIRST DRAW? A. 15/33 B. 1/15
C. 1/33 D. 15/18 Q. WHAT IS THE PROBABILITY YOU SELECT A DIME ON
YOUR SECOND DRAW IF YOU DO NOT SELECT A DIME ON YOUR FIRST DRAW? A....

A penny bank contains 1 quarter, 4 dimes, and 2 nickels. You
reach in and randomly pull out two coins. Let X be the random
variable representing the value of the coins you pull out in cents
(e.g. a dime and a nickel would make X=15). Construct a probability
distribution for X.
How many values of X are possible?

Losing a coin. You begin the day carrying 2
nickels and 1 dime in your pocket. Sadly, your pocket has a hole.
Very sadly, at the end of the day, one of the 3 coins has fallen
out. Each of the three coins has an equal probability of falling
out. In the evening, you reach into your pocket and pull out one of
the two remaining coins, each of which has an equal probability of
being chosen. The coin you...

There are three types of jars containing coins. Jar type 1 has 1
dime, 2 pennies, and 3 quarters. Jar type 2 has 2 dimes, 1 penny,
and 1 quarter. Jar type 3 has 1 dime, 3 pennies, and 1 quarter. You
can choose as many of each type of jar as you want. Solve a matrix
problem to ﬁgure out how to choose jars so that you will end up
with an equal amount of each type of coin....

There are 8 RED boxes that contain 3 nickels
and 7 quarters each, and 2 GREEN boxes that
contain 9 nickels and 1 quarter.
A coin is drawn randomly from one of the boxes.
What is the probability that selected coin is nickel?
If it is nickel, what is probability that it is taken from RED
box?
Using Ti-34 calculator
Equations/answer written out using
binomcdf(x,x,x)
Binompdf(x,x,x)
Invnorm
InvT
tcdf
If possible/needed to solve the equation

A jar contains 5 pennies, 8 nickels and 3 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins.
Find the probability X = 10.
Find the probability X = 11.
Find the expected value of X.

1.A jar contains 3 pennies, 8 nickels and 6 dimes. A child
selects 2 coins at random without replacement from the jar. Let X
represent the amount in cents of the selected coins.
Find the probability X = 10.
Find the probability X = 11.
Find the expected value of X.
2.Assume that z-scores are normally distributed with a
mean of 0 and a standard deviation of 1.
If P(z>d)=0.9434P(z>d)=0.9434, find d.
3.A company produces steel rods. The lengths of...

A bag contains 5 red marbles, 9 white marbles, and 9 blue
marbles. You draw 5 marbles out at random, without replacement.
What is the probability that all the marbles are red?
The probability that all the marbles are red
is .
What is the probability that exactly two of the marbles are
red?
The probability that exactly two of the marbles are red
is .
What is the probability that none of the marbles are red?
The probability of picking no...

There are 10 balls in a bag. 3 are red, 5 are white, 2 are blue.
You are to randomly choose two balls, taking one out and then
another with replacement.
What is the probability you will get two blue balls?

There are 10 balls in a bag. 3 are red, 5 are white, 2 are blue.
You are to randomly choose two balls, taking one out and then
another without replacement.
What is the probability that you will get two red balls?

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